Store user settings/data on the server and multi user support (#2160)

* wip per user data

* Rename, hide menu

* better error
rework default user

* store pretty

* Add userdata endpoints
Change nodetemplates to userdata

* add multi user message

* make normal arg

* Fix tests

* Ignore user dir

* user tests

* Changed to default to browser storage and add server-storage arg

* fix crash on empty templates

* fix settings added before load

* ignore parse errors

tests-ui/babel.config.json

@@ -1,3 +1,4 @@
 {
-	"presets": ["@babel/preset-env"]
+	"presets": ["@babel/preset-env"],
+	"plugins": ["babel-plugin-transform-import-meta"]
 }